I have three weights that replace the forend cap on 390 and 391's.I have an Angle Port kenetic weight that is black for a 390 i will sell for 50.00 delivered.The other one for a 390 is a dead mule 7 oz from 100 straight products that is as new in the package and i will take 40.00 delivered for it.The one for a 391 is solid stainless and is new unused.It weighs probably 10 oz and can be cut down to any weight you want from a machine shop if it is too heavy.I will take 30.00 for it delivered.